Ventilator.



RICHARD WEBB BURNETT, 0F MONTREAL, QUEBEC, CANADA.

VENTILATOR.

Specification of Letters Patent. Patntcd Feb. 1917..

vApplication filed June 15, 1914,. Serial'No. 845,238.- l I To all whom t may concern.'

Be it known that I, RICHARD VEBB BUR- Nn'r'r, residing at the city of Montreal, Province of Quebec, Dominion of Canada, have 4invented certain newv and useful Improvements in Ventilatore; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to Ventilators for refrigerator cars, and more particularly to the ventilators of the type combined with the hatch through which the ice is loaded, but it is applicable to cars of all types. The objectof my invention is to provide a ventilator which will be cinder-proof, and simple and inexpensive to construct; and to this end the vinvention may be said briefly to consist of a Ventilating'hatch cover comprising a top having three flanged sides and a non-flanged side and a Ventilating member secured the last mentioned side comprising a screen rigidly secured in place and consisting ofa pair of spaced sheets of material pervious to air and'ad'aptedto have the outer sheet act as a baiilerfor so retarding the speed of cinders passing through that they are stopped by the inner sheet; an additionalfeature being the discharge of the cinders from the intervening space.

F or full comprehension', however, of'my invention, reference must be had to the accompanying drawings, in which similarreference characters indicate the same parts, and wherein:

Figure l is a plan View of my limproved device partly in section;.Fig. 2 is a front elevation thereof illustrating particularly the Ventilating member; Fig. 3 is a vertical sectional View taken on line A A Fig. 1.

My invention is illustrated applied to a box car of the ordinary type having hatches in its roof. One 4of these hatches is illustrated at 2 and consists of four wooden walls projecting slightly above the roof. These walls are protected by amember 3 of angle cross-section inclo'sing the same and constructed and arranged to have one flange lie in flat contact with the car roof and the other flange project slightly above each of top. The fourth side ofthe cover is constituted by a Ventilating member or screen y consisting of a pair of oblong rectangular frames' 8 and 9 spaced apart a'ndrigidly secured together by a series of pipe Yferrules 12 mounted von bolts 13, the whole being rigidly secured to the cover by means of the turned in edges lll of the tapered sides, which edges form the ends -ofthe outer frame 8 to which is riveted a 'member 15 of inverted U cross-section secured to the underside of the top and riveted to both ventilating member and cover. In order to reinforce the cover against the stresses and strains to which hatch covers for cars are subjected, a stiffening band 25 extends completely around the cover including the screen to all of which it is riyeted. This band constitutes the lower side of the outer frame 8 of the screen.

Each frame of the screen is completely covered by a sheet of wire netting 17, the bottom of the screen being open `and a clear space being provided between the sheets of the screen, the purpose being to permit cinders and dirt which pass through the outer sheet and are collected between the sheets to fall out when the cover is lifted.

l In order to afford means for closing the Ventilating Vside-0f the coverwhen ventilation is not desired a door 2O is hinged to the free edge of the inclined top and is'adapted to be swung down in front of the outer frame 8 when in closed position and when in open position to lie back in flat contact with lthe top.

vrlhe cover is hinged to the car-roof by means of a pair of straps 21 secured as at 30 tothe corners of the cover formed by the ends of side 5 and tapered sides 6 and 7. Each of these straps is folded back upon 'itself at approximately midway its length as at 26 and the `folded back portion is turned out at right angles thereto about midway the length thereof-as at 28. These folded back portions are pivotally mounted upon a hinge bar 3l .which in turn is journaled in the upturned edges 32 of a pair of plates 33 secured to the car roof. v

In order to lock the cover in place a hasp 34 is secured to the stiffening band midway the length of the Ventilating member and is constructed and arranged to rest in a bracket 35 secured to the roof of the car and having its ends turned up as at 36 to carry a Cotter pin 37. The cotter pin when in place pre- ICI-O IGS i vents the hasp being lifted from the bracket while the turned up ends thereof intersect the path of the door and consequently serve to lock it in place as well as the cover. When it is desired to open the door the cotter pin is removed and the cover lifted sufficiently to allow the door to clear turned up ends, this being accomplished the cover may be lowered again and the cotter pin once more inserted in the bracket.

To facilitate lifting, the top of the cover is provided with a handle -lO and is reinforced by a member of angle cross-section il extending completely across the saine and secured to the underside thereof, the handle, top, and angle member being rigidly secured together by rivets passed therethrough.

lWhat I claim is as follows l. In a car' the combination with an ice loading hatch, of a combined sealingand Ventilating member consisting of a unitary sheet-metal cover having one side hingedly secured to the car and having its opposite side open for Ventilating purposes; a screen extending across said opening and being rigidly secured to the cover and movable in unison therewith, said screen ,consistingv of a pair of frames of equal dimensions spaced apart and rigidly secured together, each frame having a sheet of wire netting stretched completely across the same, the outer sheet being adapted to act as a baiiler.

A hatch cover for box cars consisting of a unitary sheet metal body having three flanged sides, a Ventilating member or screen completing the unflanged side and consisting of a pair of oblong rectangular frames, means rigidly securing such frames together in spaced relation, a member of inverted U cross-section riveted to both lventilating member' and cover, and a sti'tfening.

band extending completely around the cover and screen and riveted in place, the said band constituting a part of the outer frame of the screen, a pair of sheets of wire netting completely covering the Said spaced frames the outer of said sheets being adapted to act as a baffler, the said screen having an opening in its bottom communieating with the interior thereof for the purpose set forth.

3. A hatch cover for box cars having a screen rigidly secured thereto for Ventilating purposes, said screen consisting of a pair of spaced sheets of material pervious to air, said sheets being relatively immovable.

l. In a car the combination with an ice loading hatch, of a combined sealing and ventilating member consisting 0f a unitary sheet metal cover having one side open, a stiifening member of comparatively narrow width surrounding and being rigidly se' RICHARD IVEBB BURNETT.

Vitnesses:

WILLIAM J. C. HnwnrsoN, T. N. PITTs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

